And Wal-Mart's rivals began to emulate its highly productive practices.

One Democratic rival, Mark Green, will begin broadcasting his own campaign commercial today.

The two interstate rivals began competing for this trophy in 2008.

Snow Chief's three rivals began to move at once behind him.

Then, last year, the two rivals began gearing up for another challenge.

But those hopes faded fast after the big rivals began hiring black employees and slashing prices.

By 1800 rivals to the Chouteau operation began demanding that the government break its contract monopoly.

But as powerful rivals began developing iron weapons, Egypt fell fatally behind.

Though Nokia's market share is more than double its closest competitor's, rivals are beginning to close the gap.

Many rivals began to appear on the scene.